Communication
Telephony & PBX
Phone system software for SIP/VoIP calling, call routing, voicemail, and PBX operations.
Best Telephony & PBX tools by public signals
These picks are computed from scored public evidence. Use the openness column in the ranking to separate OSI-approved, source-available, open-core, proprietary, and unverified-license tools.
Use Case Rankings
Ordered by ToolVitals score, health, shipping, confidence, and then adoption as a tie-breaker.
| # | Tool | Health | Shipping | Openness | Stars | Score | Status |
|---|---|---|---|---|---|---|---|
| 01 | dograh Open-source voice agent platform. | 93 | 100 | OSI-approved OSS | 5k | 96 | Active |
| 02 | FS PBX Open-source PBX platform for business telephony and VoIP deployments. | 85 | 98 | OSI-approved OSS | 220 | 93 | Active |
| 03 | Kamailio Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalability | 85 | 86 | OSI-approved OSS | 2.9k | 89 | Active |
| 04 | MikoPBX Open-source PBX for small business built on Asterisk. | 78 | 84 | OSI-approved OSS | 563 | 85 | Active |
| 05 | Linphone Linphone is a free VoIP and video softphone based on the SIP protocol. Mirror of git://git.linphone.org/linphone-desktop.git | 68 | 66 | OSI-approved OSS | 497 | 74 | Warning |
| 06 | Fonoster 🚀 The open-source alternative to Twilio. | 58 | 30 | OSI-approved OSS | 8k | 60 | Warning |
| 07 | FastAICC Open-source AI call center solution with FreeSWITCH and LLM support. | 38 | 7 | License unknown | 1 | 39 | Critical |
| 08 | ICTFAX Open source fax server software for inbound and outbound faxing with API integration. | 33 | 0 | OSI-approved OSS | 210 | 37 | Critical |
Evidence Watch
Tracked tools with useful public signals but no verdict score yet.